What is Freeze Drying
Freeze Drying is a state of the art method for floral preservation. It is a combination of science and art. Freeze drying has been rated as the best method of floral preservation by Good Housekeeping and also by NBC Dateline.
How does it work?
- Flowers are hydrated with special solution, this aides for quality processing and revives stressed flowers.
- Flowers are then pretreated according to type, and color. All pretreatments are biodegradable.
- Pre-treatments help to shatter proof and sets natural color and durability and opens the cellular structure.
- With the cellular structure open you are able to remove water more efficiently .
- Flowers are placed in a storage freezer to solidly freeze them before loading into machine.
- Flowers are loaded into machine according to type and color.
- Temperature in product chamber is -25 degrees. A vacuum is applied.
- The vacuum and extreme low temperature allows the ice crystals in the flowers to sublimate to water vapor.
- Vapor is then drawn down to the ice bank which is a -55 degrees and is turned back to ice.
- The temperature of the product chamber is slowly raised daily until it reaches 70 degrees.
- Some flowers need a longer drying time. Drying times can vary from 14 to 21 days.
- Once finished the flowers are then post treated and tinted as needed.